Which preposition to use with laramie

about Occurrences 1%

We made this trip and got back to Fort Laramie about November 1st.

for Occurrences 1%

I then quit the employ of Russell, Majors & Waddell, and joined a party of trappers who were sent out by the post trader, Mr. Ward, to trap on the streams of the Chugwater and Laramie for beaver, otter, and other fur animals, and also to poison wolves for their pelts.

in Occurrences 1%

We were out two months, but as the expedition did not prove very profitable, and was rather dangerous on account of the Indians, we abandoned the enterprise and came into Fort Laramie in the latter part of December.

on Occurrences 1%

Two months later, we met old man Andy, way up at Fort Laramie on the North Platte.

with Occurrences 1%

On the same day, Lieutenant-Colonel Hoffmann advanced from Fort Laramie with several companies of infantry and cavalry, escorting the supply-trains which were parked there through the winter, and on the speedy arrival of which at Camp Scott the subsistence of General Johnston's command depended, unless it should force its way into the Valley.

without Occurrences 1%

We had expected to push on to Fort Laramie without stopping elsewhere, but when we reached Fort Bernard, a small fur-trading post ten miles east of Fort Laramie, we learned that the Sioux Indians were gathering on Laramie Plain, preparing for war with the Crows, and their allies, the Snakes; also that the emigrants already encamped there found pasturage very short.

Which preposition to use with  laramie